ASTM D5103-2007(2012) Standard Test Method for Length and Length Distribution of Manufactured Staple Fibers (Single-Fiber Test) 《人造短纤维长度和长度分布的标准试验方法(单纤维试验)》.pdf
《ASTM D5103-2007(2012) Standard Test Method for Length and Length Distribution of Manufactured Staple Fibers (Single-Fiber Test) 《人造短纤维长度和长度分布的标准试验方法(单纤维试验)》.pdf》由会员分享,可在线阅读,更多相关《ASTM D5103-2007(2012) Standard Test Method for Length and Length Distribution of Manufactured Staple Fibers (Single-Fiber Test) 《人造短纤维长度和长度分布的标准试验方法(单纤维试验)》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D5103 07 (Reapproved 2012)Standard Test Method forLength and Length Distribution of Manufactured StapleFibers (Single-Fiber Test)1This standard is issued under the fixed designation D5103; the number immediately following the designation indicates the year oforiginal adoption or, in the
2、 case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of averagestaple length and staple length dis
3、tribution of both manufac-tured and natural fibers by manually measuring single fiberlengths. This test method is also used to measure the length offibers removed from a staple yarn, but such a measurementmay not represent the fibers staple length, as manufactured.1.2 Because this test method requir
4、es measuring the lengthof only 50 fibers, it is not suitable for use in determining thenumber of long fibers that occur infrequently in a sample.NOTE 1For determination for overlength fibers, refer to Test MethodD3513.NOTE 2For methods covering the determination of the average lengthand length distr
5、ibution of natural fibers, refer to the following methods:for cotton, Test Method D1440, and Test Method D1447, for wool, TestMethod D519, Test Method D1234, and Test Method D1575.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is therespo
6、nsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD519 Test Method for Length of Fiber in Wool TopD1234 T
7、est Method of Sampling and Testing Staple Lengthof Grease WoolD1440 Test Method for Length and Length Distribution ofCotton Fibers (Array Method)D1447 Test Method for Length and Length Uniformity ofCotton Fibers by Photoelectric MeasurementD1575 Test Method for Fiber Length of Wool in ScouredWool an
8、d in Card SliverD1776 Practice for Conditioning and Testing TextilesD2258 Practice for Sampling Yarn for TestingD3333 Practice for Sampling Manufactured Staple Fibers,Sliver, or Tow for TestingD3513 Test Method for Overlength Fiber Content of Manu-factured Staple FiberD4849 Terminology Related to Ya
9、rns and Fibers3. Terminology3.1 For all terminology relating to D13.58, Yarns andFibers, refer to Terminology D4849.3.1.1 The following terms are relevant to this standard:length distribution, velveteen.3.2 For all other terminology related to textiles, see Termi-nology D123.4. Summary of Test Metho
10、d4.1 Each fiber to be tested is gripped at the tips with forceps,fully extended without stretching, and measured. The averagefiber length of the measured fibers is calculated and the lengthdistribution curve is plotted.5. Significance and Use5.1 This test method is used for research, development,qua
11、lity control, product specifications, and may be used foracceptance testing of commercial shipments of textile fibers.However, caution is advised since information on between-laboratory precision is lacking. Comparative tests as directed in5.1.1 may be advisable.5.1.1 If there are differences of pra
12、ctical significance be-tween reported test results for two laboratories (or more),comparative tests should be performed to determine if there isa statistical bias between them, using competent statisticalassistance.As a minimum, test samples that are as homogenousas possible, drawn from the material
13、 from which the disparatetest results were obtained, and randomly assigned in equalnumbers to each laboratory for testing. The test results from thetwo laboratories should be compared using a statistical test forupaired data, at a probability level chosen prior to the testingseries. If a bias is fou
14、nd, either its cause must be found and1This test method is under the jurisdiction of ASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.58 on Yarns and FibersCurrent edition approved July 1, 2012. Published August 2012. Originallyapproved in 1990. Last previous editio
15、n approved in 2007 as D5103 07. DOI:10.1520/D5103-07R12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copy
16、right ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.corrected, or future test results for that material must beadjusted in consideration of the known bias.5.2 This test method provides objective measurements fordetermining the average fiber l
17、ength and length distribution ina sample of fiber.5.3 The staple length diagram of a fiber sample can be usedto determine the relative number of fibers above and below aspecified length. If a fiber is too long, it will not process wellin spinning, and if there is a preponderance of short fibers, the
18、yarn might have lower than normal breaking strength.6. Apparatus6.1 Test Board, covered with suitable material, for example,velveteen, of contrasting color to that of the fiber and at least10 mm (12 in.) longer than the longest fiber to be measured.6.2 Precision Scale, graduated with 1.0-mm (0.02-in
19、.) divi-sions.6.3 Illuminated Magnifier,3with a 33103 lens equippedwith illumination, optional (see 9.7).6.4 Forceps,4two pairs, fine-pointed forceps, curved orstraight tips.7. Sampling7.1 Lot SamplingAs a lot sample for acceptance testing,take at random the number of shipping containers directed in
20、the applicable material specification or other agreement be-tween the purchaser and supplier, such as an agreement to usePractice D3333 or Practice D2258. Consider shipping contain-ers to be the primary sampling units.NOTE 3An adequate specification or other agreement between thepurchaser or supplie
21、r requires taking into account the variability betweenshipping units, between packages, ends or other laboratory sampling unitswithin a shipping unit if applicable, and within specimens from singlepackage, end or other laboratory sampling units to provide a samplingplan with a meaningful producers r
22、isk, consumers risk, acceptablequality level, and limiting quantity level.7.2 Laboratory SampleAs a laboratory sample for accep-tance testing, take at random from each shipping container inthe lot sample the number of laboratory sampling units asdirected in an applicable material specification or ot
23、her agree-ment between the purchaser and supplier such as an agreementto use Practice D3333 or Practice D2258. Preferably, the samenumber of laboratory sampling units are taken from eachshipping container in the lot sample. If differing numbers oflaboratory sampling units are to be taken from shippi
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